Answer: subtopics to be covered in the essay.
Explanation:
A thesis statement is one sentence that briefly (but precisely) describes the main claim of an essay. Ideally, it should also include the main topics that will be discussed in body paragraphs.
In this thesis statement, it is correctly stated that these two texts share the same theme. In order to make it even stronger, the author needs to mention the subtopics that will be elaborated later in the text. For instance, the migration which happens due to drug wars could be mentioned, as well as child immigration.
